If you experience water leakage at the bottom motor unit, you may consider to continue pumping session. Do not panic. After the session, disconnect tubing from motor unit and turn it on to let it run for 30 minutes to purge out any remaining water left in the motor unit. To prevent this problem from reoccurring, please do not wash the tube and ensure inner cups are not torn. Please do not hesitate to contact our Customer Service hotline at +60358785740 should you require any further assistance.